Lice infestation is a disease in which lice are parasitic in the child’s hair. The main symptom of head lice disease is: itching of the scalp, especially during strenuous exercise or when the head is heated. Inspection reveals very small, white, crystalline nits tightly attached to the roots of the hair. It is different from dandruff and cannot be easily removed. Head lice is a contagious disease and often children become infected because they come into contact with lice carriers. Lice are small insects that can fly down onto other people’s scalps through contact, and the adult lice then lay their eggs at the root of the hair and hatch into nits two weeks later. Lice live in the hair and grow by biting the scalp and sucking blood from the body. When it bites the scalp, the child develops an itchy sensation. Since lice cause itching and are highly contagious, it is important to give timely eradication. If you have seen lice eggs after checking your child’s hair, you should go to a pharmacy to buy a lice egg removal remedy. For example, sulfur soap, sulfur ointment, lindane cream, which is usually required for 1-2 months. Wash your child’s hair according to the instructions and keep the medication in the hair overnight to ensure that the lice eggs are all killed. Since some lice removers can produce allergic reactions in asthmatics, read the relevant instructions carefully before use. You can choose to apply 50% tincture of bacitracin all over the scalp and hair every 2 days, and wash your hair with plenty of hot soap on the 3rd day. Use a grate to grate out the lice and their eggs. You can also use kerosene mixed with vegetable oil in equal amounts, apply to the scalp, hot towel wrap, once a night. If you want to kill the eggs it is recommended that Permethrin or Permethrin tincture be applied to the hair. For children, it is recommended to shave the hair and then apply the effect is better.